LiveDeveloper Tools•2025
CSVKit
The ultimate CSV & Excel toolkit
Role
Full-Stack Developer
Year
2025
Status
Live
Overview
CSVKit is a browser-based toolkit for handling unwieldy CSV and Excel files. It can read, repair, transform, and convert files that would normally choke a spreadsheet app, with a streaming architecture that keeps the UI responsive on multi-gigabyte inputs.
Capabilities
01
Massive File Support
Streamed parsing keeps the browser responsive even on multi-GB CSV files.
02
Format Conversion
Convert between CSV, TSV, Excel (xlsx / xls), JSON, and Parquet with one click.
03
Repair & Clean
Auto-detects encoding issues, ragged rows, and malformed quoting; one-click repair.
Tech stack
Next.jsFastAPIPostgreSQLWebAssemblyTailwindCSS